Projectors will produce some noise when it is working, it is normal. Because the projector unit is usually designed to be relatively compact, and the surface opening rate is lower, which also compresses the heat dissipation space. But when VANKYO 470 Pro is making loud noise during working, you may need to take some measures to fix it.
All the steps above aim at preventing the unit from overhearing, Because overheating requires VANKYO 470 Pro’s fan work harder, hence loud noise is produced. On the other hand, try to avoid long-term use for single use.
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